Examine source code of colorful galaxies

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ba7b7b",
      "tab_background_text": "#800080"
    }
  },
  "version": "2.0",
  "name": "colorful galaxies",
  "manifest_version": 2,
  "description": "This theme brings delight when you look at it in your Firefox browser !!!"
}